a(n) is smallest safe prime (A005385) such that a(n) + 12*n is the next safe prime, i.e., x = (a(n) - 1)/2 and x + 6*n are closest Sophie Germain primes.
A059327
a(n) is smallest safe prime (A005385) such that a(n) + 12*n is the next safe prime, i.e., x = (a(n) - 1)/2 and x + 6*n are closest Sophie Germain primes.
Terms
- a(0) =11a(1) =23a(2) =227a(3) =179a(4) =107a(5) =1367a(6) =263a(7) =887a(8) =2099a(9) =719a(10) =587a(11) =8819a(12) =3467a(13) =1019a(14) =10163a(15) =27827a(16) =1619a(17) =7823a(18) =27299a(19) =2207a(20) =44267a(21) =3203a(22) =7247a(23) =5099a(24) =11807a(25) =45887a(26) =18119a(27) =15803a(28) =79559a(29) =13163
External references
- oeis: A059327